Section 4 Verifying Operation 1. When using the E6000 emulator for the H8S/2646 series, turn on the emulator according to the
procedures described in the E6000 Series Emulator User's Manual (HS2000EPI61HE).
2. Verify the user system interface cable connections by accessing the external memory and ports
to check the bus states of the pins with the MEMORY_FILL c ommand (emulator command). If
an error is detected, recheck the soldered IC socket and the location of pin 1.
3. The emulator connected to this user system interface cable supports two kinds of clock sources
as the MCU clock: an emulator internal clock and an external clock on the user system. For
details, refer to the Emulator Supplementary Information (HS2646EPI61HE).
To use the emulator internal clock
Select the clock in the emulator station as the system clock (φ), by using the CLOCK
command (emulator comman d).
To use the external clock on the user system
Select the target clock t or t2 as the system clock (φ), by using the CLOCK command
(emulator command). Supply the external clock from the user system to the emulator by
inputting the external clock from the EXTAL on the cable head or connecting a crystal
oscillator to the EXTAL and XTAL terminals. For details, refer to section 21, Clock Pulse
Generator, in the H8S/2646 F-ZTAT™ Hardware Manual.
Figure 10 shows the oscillator circuit on the user system interface cable.
To E6000
emulator
R2 270
R1 1 M HCU04
HCU04
HCU04
EXTAL XTAL
Figure 10 Oscillator Circuit
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